Answer:
A. 500 cm3
Explanation:
The general inverse variation equation is
y = k/x, where y varies inverse as x and k is the constant of proportionality.
Thus, if we substitute V for y and P for x in the equation, we have
V = k / x
To find k, we can plug in 80 for V and 2000 for P and solve for k:
80 = k / 2000
160000 = k
Finally, to find V when P = 320 millimeters, we can plug in 160000 for k and 320 for P and solve for V:
V = 160000 / 320
V = 500 cm3